The Holy Archdiocese of Nigeria is a diocese under the jurisdiction of the Greek Orthodox Patriarchate of Alexandria and All Africa. Its territory includes the parishes and missions located in the nations of Nigeria, Niger, Benin, and Togo. The see of Nigeria was established as a diocese in 1997 by a Patriarchal and Synodal Decree. Subsequently, the see was raised to the dignity of an archdiocese in October 2004.